app.py

from pathlib import Path

from fastapi import FastAPI, Response
from fastapi.responses import FileResponse
from fastapi.staticfiles import StaticFiles
import uvicorn

ROOT = Path(__file__).resolve().parent
DIST = ROOT / "dist"
ASSETS = DIST / "assets"
INDEX = DIST / "index.html"

app = FastAPI()


@app.middleware("http")
async def add_browser_inference_headers(request, call_next):
    response = await call_next(request)
    response.headers.setdefault("Cross-Origin-Opener-Policy", "same-origin")
    response.headers.setdefault("Cross-Origin-Embedder-Policy", "require-corp")
    response.headers.setdefault("Cross-Origin-Resource-Policy", "cross-origin")
    return response


@app.get("/healthz")
def healthz():
    return {"ok": True}


@app.get("/favicon.ico", include_in_schema=False)
def favicon():
    return Response(status_code=204)


if ASSETS.exists():
    app.mount("/assets", StaticFiles(directory=ASSETS), name="assets")


@app.get("/{path:path}", include_in_schema=False)
def serve_app(path: str):
    candidate = DIST / path
    if path and candidate.is_file():
        return FileResponse(candidate)
    return FileResponse(INDEX)


if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=7860)